Arrangement of replaceable cord for electrical apparatus

ABSTRACT

A replacement cord for an electrical appliance has the conventional two wire cord split to give two separate insulated conducting wires. The two wires carry a common plug and are attached to the plug by passing each wire through a separate hole formed in opposite sides of the plug. The wires extend out of said plug and are tied together in an underwriter&#39;&#39;s knot. Each wire carries on its inner end a male plug receivable in a female socket carried by wires within the handle of the appliance which in turn each leads to a switch. The plug has a flange receivable in a groove formed in the interior of the handle which serves to retain the plug when the plug is seated in the handle with its flange positioned in the groove and the two halves of the handle are connected by nuts and bolts to each other.

United States Patent 91 Grandinetti [451 May 6,1975

[ ARRANGEMENT OF REPLACEABLE CORD FOR ELECTRICAL APPARATUS [76]Inventor: Edward M. Grandinetti, 2815 Los Flores Blvd., Lynwood, Calif.90262 [22] Filed: Aug. 16, 1973 21 Appl. No.: 388,823

Primary Examiner-James T. McCall Assistant Examiner-Lawrence J. StaabAttorney, Agent, or FirmLyon & Lyon [57] ABSTRACT A replacement cord foran electrical appliance has the conventional two wire cord split to givetwo separate insulated conducting wires. The two wires carry a commonplug and are attached to the plug by passing each wire through aseparate hole formed in opposite sides of the plug. The wires extend outof said plug and are tied together in an underwriters knot. Each wirecarries on its inner end a male plug receivable in a female socketcarried by wires within the handle of the appliance which in turn eachleads to a switch. The plug has a flange receivable in a groove formedin the interior of the handle which serves to retain the plug when theplug is seated in the handle with its flange positioned in the grooveand the two halves of the handle are connected by nuts and bolts to eachother.

1 Claim, 5 Drawing Figures 1 ARRANGEMENT OF REPLACEABLE CORD FORELECTRICAL APPARATUS BACKGROUND OF THE INVENTION This invention relatesto a replacable cord for an electrical apparatus together with meansassociated with the cord and the apparatus to make the cord easilyreplacable and to secure the cord in the apparatus with sufficientcertainty to pass the underwriters laboratory requirements.

These and other features, advantages and objects will be apparent fromthe appended specification in which:

FIG. 1 is a perspective view of the handle of a hairdryer with theinvention applied thereto.

FIG. 2 is a view of the same device shown in FIG. 1 with one-half of theshell of the dryer removed.

FIG. 3 is a section taken along the lines 33 of FIG. 2.

FIG. 4 is a view taken along the lines 4-4 of FIG. 3, and

FIG. 5 is a plan view of a plug embodying the present invention separatefrom the appliance.

DESCRIPTION OF THE PREFERRED EMBODIMENT Referring now more particularlyto the drawings, there is shown in FIG. 1 a handle of a hairdryerindicated by the numeral and the present invention is attached theretoas shown at 11. The cords 12 and 13 indicate conventional electricalwires which will be in use connected to the house electrical supplysystem. The numerals 14, 15, 16 and 17 indicate switches for the varioussettings connected with a conventional hairdryer and form no part of thepresent invention.

FIG. 2 shows the present invention as applied to a hairdryer. The shell18 is hollow and adjacent the bottom opening thereof there are formed inthe plastic casting a slot 19 which is arranged to receive a flange 20on the adapter or plug 21 for the cord. It can be appreciated that theshell 18 is in two halves held together by nuts and bolts in normal use.

The cord 22 is conventional and leads through the wires 12 and 13 whichform the cord through openings 23 and 24 to the interior of the adapterplug. The two wires thus brought together within the adapter plug extend therefrom and are tied together in an underwriters knot 25. Each ofthe wires 12 and 13 carries a male plug (not shown) and in the interiorof the shell there are two other wires which lead to the variousswitches which other wires carry mating sockets adapted to receive themale plugs just described.

Referring now more particularly to FIG. 4, it will be seen that the plugconsists of a plastic member having a hole 25 therein adapted to receivethe cord 22 and the two separate wires forming the cord 22 areaccommodated in portions 26 and 27 of the plug from which they lead tothe various connections. A groove 28 is formed in the adapter whichgroove receives the flange 20 which is seated in the shell with theflange 20 extending into the slot 19. It will be appreciated that thestructure just described is duplicated in the other onehalf of the shellso that when the replacement cord is placed in the dryer and the twohalves of the shell brought together by the associated nut and bolt,that the flange 20 will be seated in the groove 19 and retained therein.

The just described device permits a replacement cord to be quickly andreadily placed in the appliance by anyone having a minimum of technicalskill, as the only electrical connection is by means of the male plugand the female socket. The underwriters knot 25 is conventional and thewhole assembly including the nut, the plug, the groove and the flange,is for the purpose of securely holding the dryer together while itpasses an underwriters test in which a thirty-five pound weight isattached to the cord 22 to see if the cord will pull out. This it willnot do because of the just described structure.

While there has been described what at present is considered a preferredembodiment of the present invention, it will be appreciated by thoseskilled in the art, that various modifications and changes can be madetherein without departing from the spirit of the invention.

What is claimed is:

l. A replacement cord assembly for an electrical appliance comprising apair of insulated wires for conducting electricity from a source to anappliance, the inner end of each of said wires carrying a male plugreceivable in a female socket in the handle of said appliance; a plugadapted to be carried by said appliance, said plug having an externalflange receivable in a groove formed in the interior of said handle,said flange and said groove cooperating to retain said plug in saidhandle, a pair of electrical wire inlet apertures, a pair of electricalwire outlet apertures, and a pair of channels, each of said channelscommunicating one of said inlets with one of said outlets, said inletsbeing disposed on opposite sides of said plug from one another and saidoutlets being disposed on a third side of said plug; said electricalwires entering said plug through said inlet apertures, exiting said plugthrough said outlet apertures and being tied together in an underwritersknot between said outlet apertures and said male plugs.

1. A replacement cord assembly for an electrical appliance comprising apair of insulated wires for conducting electricity from a source to anappliance, the inner end of each of said wires carrying a male plugreceivable in a female socket in the handle of said appliance; a plugadapted to be carried by said appliance, said plug having an externalflange receivable in a groove formed in the interior of said handle,said flange and said groove cooperating to retain said plug in saidhandle, a pair of electrical wire inlet apertures, a pair of electricalwire outlet apertures, and a pair of channels, each of said channelscommunicating one of said inlets with one of said outlets, said inletsbeing disposed on opposite sides of said plug from one another and saidoutlets being disposed on a third side of said plug; said electricalwires entering said plug through said inlet apertures, exiting said plugthrough said outlet apertures and being tied together in an underwritersknot between said outlet apertures and said male plugs.